U.S. Military Keys

During WW1 & WW2, many different keys were made for the U.S. Navy and Army Signal Corps. Navy keys can be identified by a prefix that begins with the letter "C". For example, CAG was General Radio, CJB was JH Bunnell, CTE was Telephonics Corp, etc.

Army Signal Corps Keys were known as "J-Series" keys because they identified their keys by a J-number ranging from J-2 through J-51 (although not every J-number actually exists)

Below are pictures of many of the Navy and Signal Corps keys.

(Click the thumbnails below to view a larger picture):


Signal Corps J-2 Key. Has Larger Contacts Like a Spark Key J-3a Key by LS Brach. Used in a WW1 Induction Telegraph Set (kd2uj.com) J-3a Key Lever Folds Back to Fit Inside Field Set Box (kd2uj.com) J-4 Silenced Instrument Key With Winker Lamp
WW1 US Army Signal Corps Induction Telegraph Set. LS Brach, Newark NJ. 1918 The Induction Telegraph Set Was Used to Communicate Between Trenches During the War Close-Up of the Schematic and Instructions for the Induction Telegraph J-5 Flameproof Key by General Radio. Ca. 1918
Close-up of the J-5 Nameplate J-5a Flameproof Key by LS Brach. Ca. 1941 Close-up of the J-5a Nameplate Different Version of J-5 Key. Part of Type 48 Wireless Set
J-6 Key by LS Brach Close-up of Brach Name Stamp J-7 Key With Winker Lamp (kd2uj.com) J-12 Key
J-37 Key J-38 Morse Code Training Key TG5-A Field Telegraph Set Using J-41 Key J-44 Key. Basically a J-37 With a Circuit Closer Switch (kd2uj.com)
J-45 Leg Key J-47 Key, Which is a J-37 on a Bakelite Base J-48 Key J-49 Electronic Keyer. Sangamo Electric Co. Springfield, Illinois
Inside the J-49 Keyer J-51 Vietnam Era Field Signal Light Key. Works by Squeezing the Handles Together. CMI-26003 Navy Flameproof Key (kd2uj.com) A Different Type of Navy Flameproof Key. Maker Unknown
Lionel Corp. Key Made for the US Navy. Model Number Unknown Close-Up of the Lionel Name on the Base CLT-26012 Navy Key. Has a Slot to Insert a Bug Wedge (kd2uj.com) Navy Waterproof Key. Uses a CJB-26001 Key
Close-Up of the Key US Navy Type CAQZ-26026 Made by Brelco KY-605/U Lightweight Plastic Key Designed to be Strapped on the Leg. Made by Electro-Voice Close-up of the Electro-Voice Markings
RT-6 Spy Radio Transmitter Used by the CIA. Made by Motorola The RT-6 Transmitter Includes a Tiny Telegraph Key That Folds Out From Inside the Unit Unknown Miniature Key, Only 3" Long. Possibly Part of a Field Set  





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